- Bat
- Batt
- Batten
- Bay window
- Beam
- Bearing header
- Bearing partition
- Bearing point
- Bearing wall
- Bedrock
- Bid
- Bid bond
- Bid shopping
- Bidding requirements
- Bifold door
- Binder
- Bipass doors
- Blankets
- Block out
- Blocked (door blocking)
- Blocked (rafters)
- Blocking
- Blow insulation
- Blue print(s)
- Blue stake
- Board foot
- Bond or bonding
- Boom
- Bottom chord
- Bottom plate
- Brace
- Breaker panel
- Brick ledge
- Brick lintel
- Brick mold
- Brick tie
- Brick veneer
- Bridging
- Buck